Field Retriever:Lady at the park said my dog was too skinny, am I under-feeding my dog?

This is my dog Bailey / beans. Bailey, turns out to be a field retriever (hence the name beans), when the breader said full pure golden. Not a worry to me though she’s the love of our life. Bailey is roughly a year and a half and finished her second heat 2 months ago, getting spayed shortly after 6 weeks ago.

Being a field retriever who’s parents were both hunting dogs, she understandably has, well, more beans then normal retrievers. Went to the dog park the other day and spent about 2 hours running back and forth doing fetch and training. A Lady with two for lack of a better term, Mutt/mix dogs comes over and stated how skinny Beans was and how I need to feed her more. We talked for a bit about and she wouldn’t back down. Bailey gets fed minimum two large meals a day (typically a full standard dog bowl of Kirkland adult food) which works out to be 1 scoop extra for her size. Dry Food is always soaked in water.

She can look skinny in the hips if she’s taken a poop or if she missed a meal due to travel but I would not think she’s underfed. I don’t want my dog to get fat/overweight especially due to how active she is due to risk of hip dysplasia.

2 hour park visits are standard 3 x a week, other 4 days are 3-4 20minute walks (rough average for a month. Dog sleeps in the kennel but is out during the day hanging out with the cats and us bar when my partner and I both leave the house where she goes to her kennel.

Does she look skinny to you? Any field retriever owners with similar stories or weight recommendations?